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[cpp] Fixed SkeletonBinary access violation if atlas and skeleton data mismatch (when attachment not found). Closes #1849.

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This commit is contained in:
Harald Csaszar 2021-02-25 11:57:40 +01:00
parent 0e5d7adf1c
commit 2112d7f6f5
1 changed files with 48 additions and 7 deletions
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55
spine-cpp/spine-cpp/src/spine/SkeletonBinary.cpp
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@ -281,8 +281,16 @@ SkeletonData *SkeletonBinary::readSkeletonData(const unsigned char *binary, cons
}
/* Skins. */
for (size_t i = 0, n = (size_t)readVarint(input, true); i < n; ++i)
skeletonData->_skins.add(readSkin(input, false, skeletonData, nonessential));
for (size_t i = 0, n = (size_t)readVarint(input, true); i < n; ++i) {
Skin* skin = readSkin(input, false, skeletonData, nonessential);
if (skin)
skeletonData->_skins.add(skin);
else {
delete input;
delete skeletonData;
return NULL;
}
}
/* Linked meshes. */
for (int i = 0, n = _linkedMeshes.size(); i < n; ++i) {
@ -470,7 +478,12 @@ Skin *SkeletonBinary::readSkin(DataInput *input, bool defaultSkin, SkeletonData
for (int ii = 0, nn = readVarint(input, true); ii < nn; ++ii) {
String name(readStringRef(input, skeletonData));
Attachment *attachment = readAttachment(input, skin, slotIndex, name, skeletonData, nonessential);
if (attachment) skin->setAttachment(slotIndex, String(name), attachment);
if (attachment)
skin->setAttachment(slotIndex, String(name), attachment);
else {
delete skin;
return nullptr;
}
}
}
return skin;
@ -488,6 +501,10 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
String path(readStringRef(input, skeletonData));
if (path.isEmpty()) path = name;
RegionAttachment *region = _attachmentLoader->newRegionAttachment(*skin, String(name), String(path));
if (!region) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
region->_path = path;
region->_rotation = readFloat(input);
region->_x = readFloat(input) * _scale;
@ -504,6 +521,10 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
case AttachmentType_Boundingbox: {
int vertexCount = readVarint(input, true);
BoundingBoxAttachment *box = _attachmentLoader->newBoundingBoxAttachment(*skin, String(name));
if (!box) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
readVertices(input, static_cast<VertexAttachment *>(box), vertexCount);
if (nonessential) {
/* Skip color. */
@ -519,6 +540,10 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
if (path.isEmpty()) path = name;
mesh = _attachmentLoader->newMeshAttachment(*skin, String(name), String(path));
if (!mesh) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
mesh->_path = path;
readColor(input, mesh->getColor());
vertexCount = readVarint(input, true);
@ -543,6 +568,10 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
if (path.isEmpty()) path = name;
MeshAttachment *mesh = _attachmentLoader->newMeshAttachment(*skin, String(name), String(path));
if (!mesh) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
mesh->_path = path;
readColor(input, mesh->getColor());
String skinName(readStringRef(input, skeletonData));
@ -559,7 +588,11 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
return mesh;
}
case AttachmentType_Path: {
PathAttachment *path = _attachmentLoader->newPathAttachment(*skin, String(name));
PathAttachment* path = _attachmentLoader->newPathAttachment(*skin, String(name));
if (!path) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
path->_closed = readBoolean(input);
path->_constantSpeed = readBoolean(input);
int vertexCount = readVarint(input, true);
@ -577,7 +610,11 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
return path;
}
case AttachmentType_Point: {
PointAttachment *point = _attachmentLoader->newPointAttachment(*skin, String(name));
PointAttachment* point = _attachmentLoader->newPointAttachment(*skin, String(name));
if (!point) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
point->_rotation = readFloat(input);
point->_x = readFloat(input) * _scale;
point->_y = readFloat(input) * _scale;
@ -592,7 +629,11 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
case AttachmentType_Clipping: {
int endSlotIndex = readVarint(input, true);
int vertexCount = readVarint(input, true);
ClippingAttachment *clip = _attachmentLoader->newClippingAttachment(*skin, name);
ClippingAttachment* clip = _attachmentLoader->newClippingAttachment(*skin, name);
if (!clip) {
setError("Error reading attachment: ", name.buffer());
return nullptr;
}
readVertices(input, static_cast<VertexAttachment *>(clip), vertexCount);
clip->_endSlot = skeletonData->_slots[endSlotIndex];
if (nonessential) {
@ -603,7 +644,7 @@ Attachment *SkeletonBinary::readAttachment(DataInput *input, Skin *skin, int slo
return clip;
}
}
return NULL;
return nullptr;
}
void SkeletonBinary::readVertices(DataInput *input, VertexAttachment *attachment, int vertexCount) {